摘要
本文以连杆节间为界,按弹性支座上和Timoshenko悬臂梁建立剪力墙部分的振动方程,按一般框架建立框架部分的振动方程。根据力、变形协调条件,形成底层大空间高层建筑结构的自由振动,并据此计算其自由振动。
In this paper, a practical method for the calculation of the free vibration of a tall building having large opening space at its ground floor level. Firstly, the building structure is divided into substructure of the frame and substructure of the shear wall by a fictitious cutting of the connecting beams. Then the vibration equation of the shear wall substructure is set up according to the theory of the Timoshenko beam, a cantilever beam supported at the bottom end; and the vibration equation of the substructure of the frame is set up according to the theory of frame structure. Thus the free vibration equation of the whole structure is set up by a consideration of the coordination conditions of the forces and displacements between these two substructures. Basing upon these, the free vibration of such kind of structure has been calculated.
出处
《上海力学》
CSCD
1994年第2期66-73,共8页
Chinese Quarterly Mechanics
关键词
自动振动
高层结构
建筑结构
Free vibration, Tall structure with large opening space at bottom, Practical method for calculation.